Gabby Giffords

President Barack Obama says the Senate’s opposition to a bill that would have expanded background checks for gun buyers marks a “shameful day for Washington.” He says a minority of senators decided “it wasn’t worth it” to protect the nation’s children.

The husband of former U.S. Rep. Gabrielle Giffords generated nearly 4,000 comments on Facebook from people on both sides of the gun debate after he posted a photo of himself buying a military-style rifle — a purchase he said he made to demonstrate how easy it is to obtain the kind of firearms he’s lobbying Congress to ban.

Former U.S. Rep. Gabrielle Giffords and her husband launched a political action committee aimed at curbing gun violence on Tuesday, the second anniversary of the Tucson shooting that killed six people and left her critically injured.

The pain was palpable, measured in silent stares in the courtroom between an emotionless murderer and wounded former congresswoman who looked her attempted killer in the eyes for the first time since he shot her in the head.

U.S. Rep. Gabrielle Giffords’ decision to resign from Congress sets up a political free-for-all in her competitive southeastern Arizona district, with voters set to pick a temporary replacement and then a full-term representative in rapid succession.